package com.zhiyou100.loans.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class UserFilter implements Filter{

	@Override
	public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain)
			throws IOException, ServletException {
		HttpServletRequest request =(HttpServletRequest) req;
		HttpServletResponse response = (HttpServletResponse) resp;
		Object obj=request.getSession().getAttribute("user");
		if(obj==null){
			response.sendRedirect("login.jsp");
		}else{
			chain.doFilter(request, response);
		}
	}

}
